Compact type flow stabilizing structure for flow testing and installation method of compact type flow stabilizing structure

Abstract

The invention discloses a compact flow stabilizing structure for flow testing and an installation method thereof.The compact flow stabilizing structure comprises a bottom plate and two side plates, the two side plates are symmetrically arranged on the two sides of the bottom plate, the included angle between each side plate and the bottom plate is an obtuse angle, and a plurality of small holes are evenly distributed in the side plates and the bottom plate; according to the compact flow stabilizing structure for the flow test and the mounting method thereof, the length of the straight section can be effectively reduced, the flow test requirement in a narrow space is met, and the use convenience is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of fluid measurement, in particular to a compact flow stabilizing structure for flow testing and an installation method thereof. Background Art

[0002] When measuring the flow rate of incompressible fluids, the flow meter needs to be installed in an area where the flow state is relatively stable. For this reason, a longer straight section of the pipe system needs to be reserved at both ends of the flow meter. If a valve is installed at the front end of the level meter, the length of the straight section of the pipe in front of the flow meter must be ≥5 times the pipe diameter; if a T-tube is installed at the front end of the level meter, the length of the straight section of the pipe in front of the flow meter must be ≥5 times the pipe diameter; if an elbow is installed at the front end of the level meter, the length of the straight section of the pipe in front of the flow meter must be ≥5 times the pipe diameter; if a reducer is installed at the front end of the level meter, the length of the straight section of the pipe in front of the flow meter must be ≥10 times the pipe diameter. The straight section length of the flow meter installation pipe should be ≥5 times the pipe diameter. Figure 1 shown.

[0003] In some places with narrow space, such as installing flowmeter, because the straight pipe section length requirement of flowmeter cannot be met, when a single flow enters the flowmeter, the fluid in the pipeline presents turbulent state, and the flow velocity at each position on the cross section of the pipeline is different, which increases the measurement error; taking the pipeline with 90° elbow as an example, after the fluid passes through the elbow, the fluid velocity inside the elbow is significantly reduced, and the fluid velocity outside the elbow is increased. After five elbow diameters, the difference in fluid velocity in the same cross section becomes smaller. In order to make the flowmeter measure more accurately, the flowmeter needs to be arranged at least ten pipe diameters after the elbow. After ten pipe diameters, the difference in fluid velocity in the same cross section is small, and the measured fluid flow value in the pipeline is more accurate. In the external pipeline system of diesel engine, there are few pipelines that meet this condition. Installing flowmeter will also affect the overall pipeline layout of diesel engine, which is not conducive to the design and assembly of diesel engine. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a compact flow stabilizing structure for flow testing, which can effectively reduce the length of the straight section, meet the flow testing requirements in a small space, and effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a compact flow stabilizing structure for flow testing, comprising a bottom plate and two side plates, the two side plates are symmetrically arranged on both sides of the bottom plate, and the angle between the side plate and the bottom plate is an obtuse angle, and the side plate and the bottom plate are evenly provided with a plurality of small holes.

[0006] As a preferred technical solution of the present invention, the side panels and the bottom panel are integrally connected.

[0007] As a preferred technical solution of the present invention, the connection between the side panel and the bottom panel adopts a rounded transition.

[0008] As a preferred technical solution of the present invention, it includes flange connection type pipeline installation and hose clamp connection type pipeline installation.

[0009] As a preferred technical solution of the present invention, the installation method of the flange-connected pipeline is: a connecting plate is horizontally connected to the top of the side plate, the side plate and the bottom plate are located inside the pipeline, the connecting plate is located between the pipeline flanges, and the connecting plate is fixed by connecting bolts.

[0010] As a preferred technical solution of the present invention, a sealing gasket is provided between the connecting plate and the pipeline flange.

[0011] As a preferred technical solution of the present invention, the installation method of the hose clamp connection type pipeline is: welding the side plate to the inside of the pipeline at the pipeline outlet on the lower side of the fluid direction.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the compact flow stabilizing structure for flow testing and the installation method thereof adopt an inclined connection between the side plate and the bottom plate to form a funnel shape, which achieves the optimal state for the constraint of the fluid. The structure can be installed in a flange-connected pipeline or a hose clamp-connected pipeline. The structure can be adjusted according to the size of the pipeline, and different materials can be selected according to the different flow media without affecting the original pipeline structure. After installing the structure, after fluids with different flow rates flow through the flow stabilizing structure, the fluid flow rates on the same cross section are close to the same, which can effectively reduce the distance of the straight section required for the flow meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of the piping type for the existing flow meter installation;

[0014] Figure 2 It is a schematic diagram of a flow stabilizing structure for a hose clamp-connected pipeline;

[0015] Figure 3 It is a schematic diagram of a flow stabilizing structure for flange-connected pipelines;

[0016] Figure 4 It is a schematic diagram of the installation of the present invention on a hose clamp connection type pipeline;

[0017] Figure 5 This is a schematic diagram of the installation of flange-connected pipelines invented this year.

[0018] In the figure: 1 bottom plate, 2 side plate, 3 connecting plate, 4 pipe, 5 connecting bolt, 6 pipe flange, 7 sealing gasket. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 2-5 The present invention provides a technical solution: a compact flow stabilizing structure for flow testing, comprising a bottom plate 1 and two side plates 2, the two side plates 2 are symmetrically arranged on both sides of the bottom plate 1, and the angle between the side plates 2 and the bottom plate 1 is an obtuse angle, and a plurality of small holes are evenly distributed on the side plates 2 and the bottom plate 1, so as to ensure that the flow stabilizing structure has sufficient strength and maintains a relatively large flow area. By having an obtuse angle between the side plates 2 and the bottom plate 1, the constraint of the flow stabilizing structure on the fluid reaches the optimal state.

[0021] For the convenience of processing, the side plate 2 and the bottom plate 1 are connected as one piece.

[0022] In order to make the entire flow-stabilizing structure beautiful, a rounded transition is adopted at the connection between the side plate 2 and the bottom plate 1 .

[0023] A method for installing a compact flow-stabilizing structure for flow testing, including flange-connected pipeline installation and hose clamp-connected pipeline installation;

[0024] When installing a flange-connected pipeline, a connecting plate 3 is horizontally connected to the top of the side plate 2, the side plate 2 and the bottom plate 1 are located inside the pipeline 4, the connecting plate 3 is located between the pipeline flanges 6, and the connecting plate 3 is fixed by connecting bolts 5.

[0025] In order to improve the sealing performance, a sealing gasket 7 is arranged between the connecting plate 3 and the pipeline flange 6. This installation method only increases the thickness of the sealing gasket 7 and the flow stabilizing structure, and has the least impact on the pipeline.

[0026] The installation method of the hose clamp connection type pipeline is: welding the side plate 2 to the inside of the pipeline 4 at the pipeline mouth on the lower side of the fluid direction. This installation structure does not affect the original structure of the pipeline 4.

[0027] During installation, in order to ensure its structural strength, the large end of the flow stabilizing structure is on the upper side of the fluid flow direction.

[0028] After the flow stabilizing structure is installed in the above two installation methods, after the fluids with different flow rates flow through the flow stabilizing structure, the flow rates of the fluids on the same section are almost the same at a pipe diameter distance after the flow stabilizing structure, which can effectively reduce the distance of the straight section required for the flow meter.

[0029] The present invention can be used in conjunction with different installation pipelines without the need for additional equipment, can effectively reduce the straight section length required for the flow meter, is conducive to the arrangement of the overall pipeline in a narrow space, and is convenient for the design and assembly of the diesel engine.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A compact flow stabilizing structure for flow testing, characterized in that: It comprises a bottom plate (1) and two side plates (2), wherein the two side plates (2) are symmetrically arranged on both sides of the bottom plate (1), and the angle between the side plates (2) and the bottom plate (1) is an obtuse angle, and a plurality of small holes are evenly distributed on the side plates (2) and the bottom plate (1).

2. A compact flow stabilizing structure for flow testing according to claim 1, characterized in that: The side plate (2) and the bottom plate (1) are integrally connected.

3. A compact flow stabilizing structure for flow testing according to claim 2, characterized in that: The connection between the side plate (2) and the bottom plate (1) adopts a rounded transition.

4. A method for installing a compact flow stabilizing structure for flow testing according to any one of claims 1 to 3, characterized in that: Includes flange connection type pipe installation and hose clamp connection type pipe installation.

5. The installation method of a compact flow stabilizing structure for flow testing according to claim 4, characterized in that: The installation method of the flange-connected pipeline is as follows: a connecting plate (3) is horizontally connected to the top of the side plate (2), the side plate (2) and the bottom plate (1) are located inside the pipeline (4), the connecting plate (3) is located between the pipeline flanges (6), and the connecting plate (3) is fixed by connecting bolts (5).

6. The installation method of a compact flow stabilizing structure for flow testing according to claim 5, characterized in that: A sealing gasket (7) is provided between the connecting plate (3) and the pipeline flange (6).

7. The installation method of a compact flow stabilizing structure for flow testing according to claim 4, characterized in that: The method for installing the hose clamp connection type pipeline is as follows: the side plate (2) is welded to the inside of the pipeline (4) at the pipeline opening on the lower side of the fluid direction.

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